/// <summary>
/// Creates a hash signature provider using SHA-3-256 hash algorithm.
/// </summary>
/// <param name="shortName">true if use short name; otherwise, false.</param>
/// <returns>A keyed hash signature provider.</returns>
public static HashSignatureProvider CreateSHA3256(bool shortName = false)
{
return(new HashSignatureProvider(SHA3Managed.Create256(), shortName ? "S3256" : "SHA3256", true));
}
/// <summary>
/// Creates a hash algorithm instance.
/// </summary>
/// <param name="name">The hash algorithm name,</param>
/// <returns>A hash algorithm instance.</returns>
/// <exception cref="ArgumentNullException">name was null.</exception>
/// <exception cref="ArgumentException">name.Name was null or empty.</exception>
/// <exception cref="NotSupportedException">The hash algorithm name is not supported.</exception>
public static HashAlgorithm Create(HashAlgorithmName name)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name), "name should not be null.");
}
if (name == HashAlgorithmName.SHA512)
{
return(SHA512.Create());
}
if (name == HashAlgorithmName.MD5)
{
return(MD5.Create());
}
if (name == HashAlgorithmName.SHA256)
{
return(SHA256.Create());
}
if (name == HashAlgorithmName.SHA1)
{
return(SHA1.Create());
}
if (name == HashAlgorithmName.SHA384)
{
return(SHA384.Create());
}
if (string.IsNullOrWhiteSpace(name.Name))
{
throw new ArgumentException("name.Name should not be null or empty.", nameof(name));
}
switch (name.Name.ToUpperInvariant().Replace("-", string.Empty))
{
case "SHA3512":
case "KECCAK512":
case "SHA3":
return(SHA3Managed.Create512());
case "SHA3384":
case "KECCAK384":
return(SHA3Managed.Create384());
case "SHA3256":
case "KECCAK256":
return(SHA3Managed.Create256());
case "SHA3224":
case "KECCAK224":
return(SHA3Managed.Create224());
case "SHA256":
return(SHA256.Create());
case "SHA384":
return(SHA384.Create());
case "SHA512":
case "SHA2":
return(SHA512.Create());
case "MD5":
return(MD5.Create());
case "SHA1":
return(SHA1.Create());
}
return(HashAlgorithm.Create(name.Name));
}